私は Android 開発にかなり慣れていないので、検証のためにマニフェストのリストを表示するアプリを作成しようとしています。
私はこれに慣れていないので、「.NET 開発者向けの OData プログラミング クックブック」の本にある例に従って、このアプリのプロトタイプを開発しました。本 (第 5 章) の例をテストしました (正常に動作します) が、何らかの理由でクラッシュします。
私の WCF OData サービスに関係があるのではないかと思います。これは Entity Framework で開発され、私のローカル PC、つまり http:192.168.0.105:8090/PODDataService.svc でホストされています。
本の例に従って、アプリは 2 つの OData エンティティのみとやり取りするため、2 つのマッピング クラスも作成しました。
プロジェクトのビルドに使用した 6 つのクラスは次のとおりです。
package com.podcheck;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.core4j.Enumerable;
import org.odata4j.consumer.ODataConsumer;
import org.odata4j.core.OEntity;
import org.odata4j.core.OLink;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.ListView;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ListView lvManifests = (ListView)findViewById(R.id.lvManifests);
// Add item click action listener
lvManifests.setOnItemClickListener(
new ManifestListItemClickListener(this)
);
// Populate category items on lstCategory
ArrayList<ManifestObj> manifestList = GetManifestItems();
ManifestsAdapter mAdapter = new ManifestsAdapter(this, R.layout.list_item, manifestList);
lvManifests.setAdapter(mAdapter);
}
// Query Category list from Northwind based WCF DataService
ArrayList<ManifestObj> GetManifestItems()
{
String svcUri = "http://192.168.0.105:8090/PODDataService.svc/";
ODataConsumer c = ODataConsumer.create(svcUri);
ArrayList<ManifestObj> manifestList = new ArrayList<ManifestObj>();
Enumerable<OEntity> cursor = c.getEntities("Manifests").expand("ManifestItems").execute();
for (OEntity entityObj : cursor)
{
ManifestObj mObj = new ManifestObj();
mObj.ManifestID = entityObj.getProperty("ManifestID", Integer.class).getValue();
mObj.ManifestCode = entityObj.getProperty("ManifestCode", String.class).getValue();
mObj.ManifestDate = entityObj.getProperty("ManifestDate", Date.class).getValue();
Date date = new Date();
if(mObj.ManifestDate == date)
{
List<OEntity> entityList = entityObj.getLink("ManifestItems", OLink.class).getRelatedEntities();
mObj.ManifestItems = new ArrayList<ManifestItemObj>();
for(OEntity pEntity: entityList)
{
ManifestItemObj miObj = new ManifestItemObj();
miObj.JobType = pEntity.getProperty("JobType", String.class).getValue();
miObj.FKID = pEntity.getProperty("FKID", Integer.class).getValue();
//miObj.SupplierID = pEntity.getProperty("SupplierID", Integer.class).getValue();
//miObj.UnitPrice = pEntity.getProperty("UnitPrice", BigDecimal.class).getValue();
mObj.ManifestItems.add(miObj);
}
manifestList.add(mObj);
}
}
return manifestList;
}
public void ShowItemsOfManifest(ManifestObj manifest)
{
Bundle bundle = new Bundle();
Intent newIntent = new Intent(this.getApplicationContext(), SubActivity.class);
newIntent.putExtras(bundle);
newIntent.putExtra("Manifest", manifest);
this.startActivity(newIntent);
}
}
package com.podcheck;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class SubActivity extends Activity implements OnClickListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sub);
ManifestObj mObj = (ManifestObj)this.getIntent().getSerializableExtra("Manifest");
TextView tv = (TextView)this.findViewById(R.id.tvContent);
StringBuffer sb = new StringBuffer();
sb.append("You have selected the following Category:");
sb.append("\nManifest: " + mObj.getManifestCode());
sb.append("\nManifest Raised On: " + mObj.getManifestDate());
sb.append("\nItems under this Manifest(" + mObj.ManifestItems.size() + "):");
sb.append("\n----------------------------------------------------------");
for(ManifestItemObj miObj: mObj.ManifestItems){
sb.append("\nJob:" + miObj.getJobType() + Integer.toString(miObj.getFKID()));
sb.append("\n\t");
}
tv.setText(sb.toString());
Button btn = (Button)this.findViewById(R.id.btnReturn);
btn.setOnClickListener(
this
);
}
public void onClick(View v) {
//this.finishActivity(0);
System.out.println("finish activity");
this.finish();
}
package com.podcheck;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
public class ManifestsAdapter extends ArrayAdapter<ManifestObj> {
int resourceId = 0;
public ManifestsAdapter(Context context, int resource, ArrayList<ManifestObj> items) {
super(context, resource, items);
this.resourceId = resource;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
LinearLayout itemRoot;
ManifestObj manifest;
manifest = this.getItem(position);
//Inflate the view
if(convertView==null)
{
itemRoot = new LinearLayout(getContext());
String inflater = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater vi;
vi = (LayoutInflater)getContext().getSystemService(inflater);
vi.inflate(this.resourceId, itemRoot, true);
}
else
{
itemRoot = (LinearLayout) convertView;
}
TextView tvName =(TextView)itemRoot.findViewById(R.id.tvCategoryName);
tvName.setText(manifest.getManifestCode());
itemRoot.setTag(manifest);
return itemRoot;
}
}
package com.podcheck;
//import android.content.Intent;
//import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout;
public class ManifestListItemClickListener implements OnItemClickListener {
MainActivity _mainActivity;
public ManifestListItemClickListener(MainActivity ma){
_mainActivity = ma;
}
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
LinearLayout itemRoot = (LinearLayout)view;
ManifestObj mObj = (ManifestObj)itemRoot.getTag();
StringBuffer sb = new StringBuffer();
sb.append("You have selected the following Manifest:");
sb.append("\nID: " + mObj.getManifestID());
sb.append("\nName: " + mObj.getManifestCode());
sb.append("\nManifestDate: " + mObj.getManifestDate());
// new AlertDialog.Builder(parent.getContext())
// .setTitle("Manifest Selected")
// .setMessage(sb.toString())
// .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
// public void onClick(DialogInterface dialog, int which) {
// // do something else
//
// }
// })
// .show();
_mainActivity.ShowItemsOfManifest(mObj);
}
}
package com.podcheck;
import java.io.Serializable;
public class ManifestItemObj implements Serializable
{
int ManifestItemID;
int FKID;
String JobType;
public int getManifestItemsID()
{
return ManifestItemID;
}
public void setManifestItemID(int manifestItemID)
{
ManifestItemID = manifestItemID;
}
public int getFKID()
{
return FKID;
}
public void setFKID(int fkid)
{
FKID = fkid;
}
public String getJobType()
{
return JobType;
}
public void setJobType(String jobType)
{
JobType = jobType;
}
}
package com.podcheck;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import org.joda.time.DateTime;
public class ManifestObj implements Serializable{
int ManifestID;
String ManifestCode;
Date ManifestDate;
boolean Consolidated;
ArrayList<ManifestItemObj> ManifestItems;
public int getManifestID() {
return ManifestID;
}
public void setManifestID(int manifestID) {
ManifestID = manifestID;
}
public String getManifestCode() {
return ManifestCode;
}
public void setManifestCode(String manifestCode) {
ManifestCode = manifestCode;
}
public Date getManifestDate() {
return ManifestDate;
}
public void setManifestDate(Date manifestDate) {
ManifestDate = manifestDate;
}
public boolean getConsolidated() {
return Consolidated;
}
public void setConsolidated(boolean consolidated) {
Consolidated = consolidated;
}
public ArrayList<ManifestItemObj> ManifestItems()
{
return ManifestItems;
}
public void setManifestItems(ArrayList<ManifestItemObj> manifestItems)
{
ManifestItems = manifestItems;
}
}
現時点では、私のマニフェストや XML ファイルとは何の関係もないと思います。
ほとんど何も変わらないので、少し迷っています。WCF Data サービスを何度もテストしました。
それはデータセットのサイズでもありますか? SQL Server DB のマニフェスト テーブルには、31000 近くのレコードがあります。
編集：ログは次のとおりです：-
'02-03 23:11:20.609: D/dalvikvm(617): GC_CONCURRENT freed 272K, 4% free 8197K/8519K, paused 33ms+5ms, total 79ms
02-03 23:11:20.609: D/dalvikvm(617): WAIT_FOR_CONCURRENT_GC blocked 32ms
02-03 23:11:20.769: D/AndroidRuntime(617): Shutting down VM
02-03 23:11:20.780: W/dalvikvm(617): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
02-03 23:11:20.809: E/AndroidRuntime(617): FATAL EXCEPTION: main
02-03 23:11:20.809: E/AndroidRuntime(617): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.podcheck/com.podcheck.MainActivity}: com.sun.jersey.api.client.ClientHandlerException: android.os.NetworkOnMainThreadException
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.ActivityThread.access$600(ActivityThread.java:130)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.os.Handler.dispatchMessage(Handler.java:99)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.os.Looper.loop(Looper.java:137)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.ActivityThread.main(ActivityThread.java:4745)
02-03 23:11:20.809: E/AndroidRuntime(617): at java.lang.reflect.Method.invokeNative(Native Method)
02-03 23:11:20.809: E/AndroidRuntime(617): at java.lang.reflect.Method.invoke(Method.java:511)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-03 23:11:20.809: E/AndroidRuntime(617): at dalvik.system.NativeStart.main(Native Method)
02-03 23:11:20.809: E/AndroidRuntime(617): Caused by: com.sun.jersey.api.client.ClientHandlerException: android.os.NetworkOnMainThreadException
02-03 23:11:20.809: E/AndroidRuntime(617): at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:128)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.sun.jersey.api.client.Client.handle(Client.java:457)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.sun.jersey.api.client.WebResource.handle(WebResource.java:557)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.sun.jersey.api.client.WebResource.access$300(WebResource.java:69)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.sun.jersey.api.client.WebResource$Builder.method(WebResource.java:539)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataClient.doRequest(ODataClient.java:214)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataClient.getMetadata(ODataClient.java:66)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataConsumer$CachedEdmDataServices.refreshDelegate(ODataConsumer.java:592)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataConsumer$CachedEdmDataServices.getDelegate(ODataConsumer.java:586)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.internal.EdmDataServicesDecorator.findEdmEntitySet(EdmDataServicesDecorator.java:46)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataConsumer$CachedEdmDataServices.findEdmEntitySet(ODataConsumer.java:598)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataConsumer.getFeedCustomizationMapping(ODataConsumer.java:559)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataConsumer.getEntities(ODataConsumer.java:313)
02-03 23:11:20.809: E/AndroidRuntime(617): at org.odata4j.consumer.ODataConsumer.getEntities(ODataConsumer.java:300)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.podcheck.MainActivity.GetManifestItems(MainActivity.java:46)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.podcheck.MainActivity.onCreate(MainActivity.java:33)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.Activity.performCreate(Activity.java:5008)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
02-03 23:11:20.809: E/AndroidRuntime(617): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
02-03 23:11:20.809: E/AndroidRuntime(617): ... 11 more
02-03 23:11:20.809: E/AndroidRuntime(617): Caused by: android.os.NetworkOnMainThreadException
02-03 23:11:20.809: E/AndroidRuntime(617): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.io.IoBridge.connect(IoBridge.java:112)
02-03 23:11:20.809: E/AndroidRuntime(617): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
02-03 23:11:20.809: E/AndroidRuntime(617): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
02-03 23:11:20.809: E/AndroidRuntime(617): at java.net.Socket.connect(Socket.java:842)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:76)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:341)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpConnection.connect(HttpConnection.java:117)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpEngine.connect(HttpEngine.java:310)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
02-03 23:11:20.809: E/AndroidRuntime(617): at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:486)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:215)
02-03 23:11:20.809: E/AndroidRuntime(617): at com.sun.jersey.client.urlconnection.URLConnect
02-03 23:11:20.839: D/dalvikvm(617): GC_CONCURRENT freed 463K, 6% free 8261K/8775K, paused 25ms+6ms, total 91ms
02-03 23:11:20.839: D/dalvikvm(617): WAIT_FOR_CONCURRENT_GC blocked 14ms'
編集：
これが今の問題だと思います：-
ODataConsumer c = ODataJerseyConsumer.create("http://192.168.0.105:8090/PODDataService.svc");
for (OEntity entityObj : c.getEntities("Manifests").expand("ManifestItems").execute())
{
//opcode
}
これは、WCF サービスを読み取っていないことを意味します。右？
別の編集: 同じアプリケーションが Android 2.3 で動作するようになりました。Android 4 と 2.3 の違いは? 明らかになるもう一つの謎。